This is a photo of the atomic bomb "Little Boy," which the USS Indianapolis carried from San Francisco to Tinian Island. The survivors, O'Donnell and Kuryla, described the mood of the men, who were suspicious when two large crates were loaded on the ship. The ship's captain, said Kuryla, told his men that what they carried would "end the war soon." He later quipped that the men thought that meant it was a "case of toilet paper for MacArthur."